Auto chain lock



HAKKERS AUTO'CHAIN LOCK.

APPLICATION FILED APR- 7. I922.

' I Patented 0%.31, 1922.

Patented (Fat. 311, W322i ao'ro CHAIN LQCK. 1

Application filed April 7, 1922. Serial No. 550,376;

To all whom it may concern:

Be it known that FLoon J. linnnnns, a citizen of the United States of America, residing at Pella in the county of Marion and State of Iowa, has invented new and usefnl Improvements in Auto Chain Locks, of

' vention consists in a construction and combination of parts of which a preferred embodiment is shown in the accompanying drawings, wherein s Figure l is a perspective view of a chain lock en'ibodying the invention applied in the operative position to a retaining chain of typical or conventional form and'showing the parts thereof in the locked position.

Figure 2 is a side view of the lock tached.

Figure 3 is a similar view showing lock with the members thereof in the locking or chain releasing position.

Figures 4 and 5 are detail views respectively of the chain lock members.

The device consists essentially of pivotally connected members 10 and 11 of which the former is represented by a single fiat leaf or plate and the latter by a plurality of side laterally spaced leaves or plates with an intervening interval corresponding approximately in thickness with the leaf forming the member 10, so that the member 10 may fold upon the common pivot 12 to lie between the planes of the leaves forming the member 11 and co-extensively therewith.

Each of the members is provided with a longitudinal slot of which that shown at 13 in the intermediate member is adapted for registration with that shown at' 1% in the other member, when the members are in the folded or registering position, and each of said slots being provided at its outer end with an enlargement 13 and 14 constituting when in registration a joint seat for the terminal link or eye 15 at the free end of the chain 16- The pivot 12 connecting the memllll the

bers of the lock also serves as a means of connecting the lock with the terminal link 1? at the other end of the chain and which is provided with coils 18 to engage said pivot which in the construction illustrated is in the form of a rivet and is terminally headed as indicated at 12:

In each of the leaves and in communicacation with the slot thereof there is formed a laterally directed and laterally accessible entrance throat of which that in communication with the slot is indicated at 13 while. that which is in communication with the slot l t is indicated at 1 1 said entrance throats thus being arranged at the inner ends of the slots or adjacentto the axis of movement of the lea and close enough to the axis of movement or to the pivot forming said axis to'be invaded or overlapped by the other leaf, said throats be ing formed in relatively opposite edges of the two leaves so that they are disposed in facing relation when the leaves are deflected as shown inYFigure to permit of engagement and disengagement of the terminal link or eye of the chain. In other words the throat in each leaf is spaced from the axis. of movement of the leaves a. distance less than half the width of the other leaf so that while tl e throats of the two leaves are in alignment transversely when the leaves are in the folded or closed position as will be noted by reference to Figures 1 and 2 and will assume avposition of transverse registration as the leaves are pivotally moved to the angular position indicated in Figure 3, so that a link or eye 15 may be moved laterally of the leaf 11 through the transversely registering portions of the throats as the leaf 10 is pivotally moved to the position indicated in Figure 3, the throats are respectively closed against access of the link or eye thereto by the overlapping portions respectively of the other leaves when the leaves reach the open p0Sition indicated in Figure 3, so that in order to re-engage the link or eye with the lock it is necessary to dispose the said link or eye, as indicated in Figure 3, in the angle between the leaves and then close or pivotally swing the leaves toward each other so that the link or eye will follow the transversely registering portions of the throats during the closing movement until it reaches a position engaging the transversely registering portions of the slots 13 and 14 from largements 13 and 14 whence it may readily pass into the seat formed by the transversely registering en- The overhanging or invading portion of the, edge of each leaf thus constitutes a temporary closure for the throat of the other leaf when the leaves arein the open positionand said throats can only be used as a means of permitting disengagement of the terminal link or eye of ,the chain when the latter is moved in conjunction with the opening moveinent of the leaves as above described, to maintainit in the transversely registering portions of the .throat and hence in advance of the invading portion of the edge of the other leaf.

The side leaves constituting the member 11 are preferably struck from a single plate .doubled or folded upon itself at one edge as shown at 19, and'the extremity of this doubled portion constitutes a shoulder forming a stop for engagement by an ear 21 formed on and projecting from the end of the interemdiate leaf to limit the angularswinging movement thereof to the posi tion indicated in Figure Swhich is neces- I sary in order to permit of the introduction for engagement of the terminal link or eye 15 of the chain. 7 v

It will be observed that in the construe tion illustrated and as preferred in practice the entrance throats are disposed in oblique relation with the length of the leaves in which they are respectively formed and are disposed in substantially tangential relation with the axis of pivotal movement of the leaves so that as the leaves swing relatively about their pivot in the opening or closing movement thereof the entrance throats follow afcommon path or remain throughout in transverse registration to afford a passage for the terminal link or' eye of the chain which is to be secured.

Having described the invention, what is claimed as new'and useful 1s:

2. A chain lock having pivot ally connected members consisting respectively of a fiat leaf and a duality of spaced leaves having an intervening interval correspond ingapproximately to the thickness of the first leaf, the two members being foldable edgewisje orparallel with their planes and provlded with transversely registerable slots terminally forming seats for a termi-.

posed in oblique relation with the lengths of the leaves so that when in open position each entrance throat is invaded by the adja cent edge of the other leaf to provide a temporaryclosure for the throat gradually receding as the leaves are moved to folded position. i

Intestimony whereof he afiixes hissignature.

LOOR J. HAKKERS.

.nal link or eye, said members being provided with laterally directed entrance throats dis 

